Version 1.4.1 - Changelog

MailPluginFix is a free tool that will help you to fix your incompatible plugins after a macOS update.

MailPluginFix screenshot

Just start the application and you will see a list of all incompatible plugins for your current installation. Just select the ones you would like to fix and press the start button in the toolbar. All selected plugins will get patched with the UIDs of the current version and also all disabled plugins will be enabled again.

macOS Mojave Compatibility

If you're using Mojave, it might be additionally necessary to re-enable the plugins in the (Preferences / General / Manage Plug-Ins).


  • Mac OS X 10.6 - 10.13
  • Works only with plugins installed in the user library folder. If you want to fix a plugin which is installed for all users you have to move it to ~/Library/Mail/Bundles first.

If this tool was helpful for you we would appreciate your donation to support our coffee consume: